The effect of introducing antibiotics into organic light-emitting diodes

Hafeez, Hassan; Jesuraj, P. Justin; Kim, Dong Hyun; Lee, Jong Chan; Shin, Jeeyoung; Rhee, Sang Ho; Lee, Won Ho; Choi, Dae Keun; Hwan, Jun; Lee, Chang Min; Kim, Chul Hoon; Lamichhane, Janardan; Pokhrel, Anaya Raj; Kim, Taesu; Sohng, Jae Kyung; Woo, Han Young; Park, Jong Bae; Chung, Hee‐Suk; Bae, Tae‐Sung; Lee, Sang Geul; Park, Hyun-Woo; Chung, Kwun‐Bum; Song, Aeran; Kwon, Jang Hyuk; Bae, Hyeong Woo; Kang, Yong‐Cheol; Park, Juyun; Song, Myungkwan; Ryu, Sung‐Soo

doi:10.1038/s42005-019-0228-3

Cited by 3 publications

(1 citation statement)

References 64 publications

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“…The optimum fusion of the two materials provides an enhanced band gap alignment, charge balance and J/H-aggregated excitons. Values of current efficiency (120 cd A −1 ), external quantum efficiency (∼35%) and power efficiency (70 lm W −1 ) are demonstrated [15]. However, most efficiency analysis used charge balance, none of them has been used exciton recombination region, an important factor for improving device photoelectric performance.…”

Section: Introductionmentioning

confidence: 99%

Realizing high efficiency and luminance in green, yellow and blue organic light emitting diode by deoxyribonucleic acid

Song,

Guan,

Wang

et al. 2023

Nanotechnology

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Although the effect of the electron blocking layer (EBL) material, deoxyribonucleic acid (DNA), on the electroluminescence (EL) performance of organic light-emitting diodes (OLEDs) has been studied, the process of DNA regulation of exciton recombination region within the device is still unclear. Herein, devices with and without EBL were fabricated using different DNA spin-coating speeds, and the photoelectric performance of device were measured. By using DNA compounded with CTMA as the EBL and hole buffer layer, so-called BioLEDs. The DNA-based green Alq3 BioLEDs achieve higher luminance (39000 cd/m2) and higher current efficiency (8.4 cd/A), which are increased by 49% and 54%, respectively, compared to the reference OLEDs without the addition of DNA. Similarly, the maximum luminance and efficiency of yellow Rubrene BioLEDs is increased by 64% (from 12120 cd/m2 to 19820 cd/m2) and 74% (from 1.36 cd/A to 2.36 cd/A), the luminance and efficiency of blue TCTA BioLEDs is increased by 101% and 245%. Specifically, we found that as the thickness of DNA-CTMA increases, the exciton recombination region moves towards the interface between the emitting layer (EML) and the hole transport layer (HTL). By better confining excitons within the EML, the current efficiency of the BioLEDs is effectively improved. Accordingly, we provide a possible idea for achieve high performance DNA-based BioLEDs by adding DNA-CTMA EBL and hole buffer layers. Meanwhile, as the DNA thickness increases, the exciton recombination region moves towards the EML/HTL interface, thereby enhancing the efficiency of the DNA-based BioLEDs.

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Section: Introductionmentioning

confidence: 99%

Realizing high efficiency and luminance in green, yellow and blue organic light emitting diode by deoxyribonucleic acid

Song,

Guan,

Wang

et al. 2023

Nanotechnology

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Efficient Photon Extraction in Top‐Emission Organic Light‐Emitting Devices Based on Ampicillin Microstructures

et al. 2022

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The desire to enhance the efficiency of organic light‐emitting devices (OLEDs) has driven to the investigation of advanced materials with fascinating properties. In this work, the efficiency of top‐emission OLEDs (TEOLEDs) is enhanced by introducing ampicillin microstructures (Amp‐MSs) with dual phases (α‐/β‐phase) that induce photoluminescence (PL) and electroluminescence (EL). Moreover, Amp‐MSs can adjust the charge balance by Fermi level (EF) alignment, thereby decreasing the leakage current. The decrease in the wave‐guided modes can enhance the light outcoupling through optical scattering. The resulting TEOLED demonstrates a record‐high external quantum efficiency (EQE) (maximum: 68.7% and average: 63.4% at spectroradiometer; maximum: 44.8% and average: 42.6% at integrating sphere) with a wider color gamut (118%) owing to the redshift of the spectrum by J‐aggregation. Deconvolution of the EL intensities is performed to clarify the contribution of Amp‐MSs to the device EQE enhancement (optical scattering by Amp‐MSs: 17.0%, PL by radiative energy transfer: 9.1%, and EL by J‐aggregated excitons: 4.6%). The proposed TEOLED outperforms the existing frameworks in terms of device efficiency.

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Biological Interfacial Materials for Organic Light-Emitting Diodes

et al. 2023

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Organic optoelectronic devices have received appreciable attention due to their low cost, mechanical flexibility, band-gap engineering, lightness, and solution processability over a broad area. Specifically, realizing sustainability in organic optoelectronics, especially in solar cells and light-emitting devices, is a crucial milestone in the evolution of green electronics. Recently, the utilization of biological materials has appeared as an efficient means to alter the interfacial properties, and hence improve the performance, lifetime and stability of organic light-emitting diodes (OLEDs). Biological materials can be known as essential renewable bio-resources obtained from plants, animals and microorganisms. The application of biological interfacial materials (BIMs) in OLEDs is still in its early phase compared to the conventional synthetic interfacial materials; however, their fascinating features (such as their eco-friendly nature, biodegradability, easy modification, sustainability, biocompatibility, versatile structures, proton conductivity and rich functional groups) are compelling researchers around the world to construct innovative devices with enhanced efficiency. In this regard, we provide an extensive review of BIMs and their significance in the evolution of next-generation OLED devices. We highlight the electrical and physical properties of different BIMs, and address how such characteristics have been recently exploited to make efficient OLED devices. Biological materials such as ampicillin, deoxyribonucleic acid (DNA), nucleobases (NBs) and lignin derivatives have demonstrated significant potential as hole/electron transport layers as well as hole/electron blocking layers for OLED devices. Biological materials capable of generating a strong interfacial dipole can be considered as a promising prospect for alternative interlayer materials for OLED applications.

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The effect of introducing antibiotics into organic light-emitting diodes

Cited by 3 publications

References 64 publications

Realizing high efficiency and luminance in green, yellow and blue organic light emitting diode by deoxyribonucleic acid

Realizing high efficiency and luminance in green, yellow and blue organic light emitting diode by deoxyribonucleic acid

Efficient Photon Extraction in Top‐Emission Organic Light‐Emitting Devices Based on Ampicillin Microstructures

Biological Interfacial Materials for Organic Light-Emitting Diodes

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